Calculate the molar concentration of the polycyclic aromatic hydrocarbon (PAH), anthracene (178.23 g/mol), that was found in a well water sample at a concentration of 2.58 ppb. Assume the density of the well water sample is 1.00 g/mL.

Q: Calculate the quantity of 0.250 M NaCl needed to prepare 250 ml of 0.010 M NaCI. O a. 1 ml ОБ. 100…

A:

Q: Various ways to measure and represent concentration are available. The following lists the common…

A: The amount of solute present in a solution is called the concentration of that solute in the…

Q: potassium

A: Dear student, this question is related to molar concentration.

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A: Hello. Since the question has multiple sub-parts, the first three sub-parts shall only be solved in…

Q: 507 A1u LE 68665 16 43\ E 17. Define the following terms: a. recrystallization b. saturated solution…

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Q: 5. Determine the boiling point of a solution of 10 grams of a substance of molecular weight 94 g/mol…

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Q: The sulfate ion level in a municipal water supply is given as 46.1 ppm. What is [SO42-] in this…

A: Answer: Concentration of sulfate ion given is 46.1ppm which means in 106g solution, 46.1g sulfate…

Q: In the laboratory, a student dilutes 10.6ml of a 10.5M hydrobromic acid solution to a total of…

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Q: A solution was prepared by dissolving 5.76 g of KCl.MgCl2.6H2O (277.85 g/mol) in sufficient water to…

A: To solve this problem first we will calculate the mole of KCl.MgCl2.6H2O and then we will calculate…

Q: A student is designing an experiment to test water from various sources for the presence of lead (a…

A: Pb is a heavy metal.  Its most common oxidation state is +2. Pb2+ is present in group II-A metal…

Q: Describe how to prepare 500 mL of 0.250 M NaCl solution.

A: Given: molarity of NaCl = 0.250 M Volume of solution = 500 mL molar mass of NaCl = 58.44 g/mol

Q: If you give 250 milliliters of liquefied water, a precipitate of 0.0467 grams of calcium oxide, what…

A: Given that: volume of water = 250 mL mass of calcium oxide = 0.0467 g To find: amount of calcium…

Q: Calculate the quantity of 0.250 M NaCI needed to prepare 250 ml of 0.010 M NaCl. Оа.1 ml ОБ. 100 mL…

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Q: If 1000 g of water from Luboc River contains 0.0075 g of Ca2+ ion, what is the concentration in ppm…

A: Parts Per Million (ppm) is a measurement of the concentration of dilute solution.

Q: Calculate the concentration of concentration of 300 g of ribose (C5H10O5) in 500 mL of water.

A: Mass of ribose = 300 g Volume of water = 500 ml = 0.500 L

Q: Determine the molar concentration of 5,0 moles of calcium hydroxide (Ca(OH)2)dissolved in 200ml of…

A: Given: The number of moles of calcium hydroxide is 5.0 mol. The volume of the solution is 200 mL.

Q: The concentration of Br− in a sample of seawater is 7.3 ⋅ 10−4 M. If a liter of seawater has a mass…

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Q: The EPA has determined that the maximum safe level of lead ion in drinking water is 15 ppb. If a…

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Q: 1. A solution of potassium chloride, KCI, has 20 grams of the salt dissolved in 100 grams of water…

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Q: Could a mixture of magnesium hydroxide, Mg(OH)2, and sodium sulfate, Na2SO4, be separated using…

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Q: Calculate the mass of bonic acid required to prepare ca 500 ml ca 4,0 % (m/V) boric acid solution in…

A: Given 4.0% boric acid and 0.020M HCl

Q: The standard concentration of a solution of barium chloride BaCl2 containing 562 mg/L is ……. Note…

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Q: 9. Separation of two substances by recrystallization depends upon their differences in a.…

A: To explain: Separation of two substances by recrystallization depends upon their differences in…

Q: A student is designing an experiment to test water from various sources for the presence of lead (a…

A: Hypothesis is a statement that presents an assumption that forms the basis of an argument. It may or…

Q: A student is designing an experiment to test water from various sources for the presence of lead (a…

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Q: Use the graph to estimate the solubility of NaNO3 in water at 40 °C Effect of temperature on solubil…

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Q: The solubility limit of a solute at 20. °C and 1.0 atm is 13.8 g of solute per 1 L of water. What…

A: The explanation is given below-

Q: Trace metals and organic contaminants are normally present at sub ppb levels in waters. What is the…

A: ppb is defined as the parts of solute per billion parts of solution given by, => ppb = Mass of…

Q: Determine the number of grams of KNO3 which will dissolve in 100g of H2O at 100 degrees Celsius.

A: The given temperature of the solution is 100 oC Mass of the solvent, water = 100 g

Q: Determine the number of grams of calcium chloride (weighed as CaCl2 .2H2O) that are needed to make…

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Q: If you have a 10% w/v solution of NaCl, what is its molar concentration?

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Q: Differentiate between molecular solutions, colloidal dispersions, and coarse dispersions.

A: Molecular solutions, colloidal dispersions, and coarse dispersion can be differentiate by…

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A: Please find your solution below : Percentage concentration is defined as a measure of amount of…

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A: Given : Volume of solution = 2 m3  And initial concentration of Ba(OH)2 = 120 ppm Since 1 m3 = 1000…

Q: At 25°C, the partial molar volume of water in this solution is 17.7 cm mol', and that of methanol is…

A: Partial molar volumes Water = 17.7 cm3/mol Methanol = 38.8 cm3/mol

Q: Determine the number of grams of calcium chloride (weighed as CaCl2.2H2O) that are needed to make…

A: Molarity = 0.010 M Volume = 100 mL The number of grams of calcium chloride (weighed as CaCl2.2H2O)…

Q: If 1000 g of water from Angat River contains 0.0075 g of Ca2+ ion, what is the concentration in ppm…

A: Given information,    Mass of water is 1000 g    Mass of Ca2+ in 1000 g of water is 0.0075 g

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Q: Which type of particles do we generally prefer for purposes of precipitation gravimetry?…

A: particles which generally prefer for  precipitation gravimetric analysis is given below

Q: Solve this

A: Molarity is defined as the number of moles of solute in 1 litre of solution. It is designated as M.

Q: 10 mL of 6M HCl was diluted to 100mL. Calculate the concentration of the dilute solution.

A: Volume of initial solution = 10 ml  Molarity of initial solution = 6 M Volume of final solution =…

Q: Concentrations of lead in the bloodstream are often quoted in units of µg/dL.Averaged over the…

A: µg/dL: It is the unit used to express the concentration. The abbreviation for this unit is…

Q: Express the concentration of a 0.0860 M aqueous solution of fluoride, F, in mass percentage and in…

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Q: The maximum acceptable concentration of Pb (207.2 g/mol) in drinking water is 10. ppb.  If a water…

A: Given :  Acceptable Concentration of Pb = 10 ppb  Molar mass of Pb = 207.2 g/mol  Concentration of…

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Q: Why do Sedimentation and filtration is important in water treatment? Is a period of time important…

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Q: 5. The concentration of lead in an industrial waste stream is 0.28 ppm. What is its molar…

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Q: Determine the molality of a 25% sodium thiosulfate, Na2S2O3, solution.

A: 25 % Means 25 gm of Na2S2O3 is present in 100 gm of solution  ∴ Wight of solvent = 100-25 = 75gm…

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